Rotor for blowers



March 5, 1929. A. FEINBERG ET AL ROTOR FOR BLOWERS Filed May 24, 1926 2 Sheets-Sheet l WU. w w m 2 mfiffl a lo 7 0 1 m m- ,1 y X J w 0. 0 j .3 f H 4 F a L m 0 0 a 0 nhflllll n {1.} o a +5 a 5 fl m JLHH- d W a u 9 H .1 .5 \p

March 5, 1929.; R ET AL 1,704,123

ROTOR FOR BLOWERS Filed May 24, 1926 2 Sheets-Sheet 2 flue/275729 WW W l atented ll 'lar.

onirso star Ancnin FEINBERG, or cnrceeo, rumors,

IOW'A, i-LSEHGNORS TO ARCTIC NIT-AIR G PORATIUN 01E ILLINUIS.

Application filed May 24 further object of the vide a rotor, fanor impeller which may be readily taken apart for passe through narrow doorways and then readily and quickly reassembled.

The above mentioned objects as well as others, together with the many advantages thereof will more fully appear as we proceed with our specification.

in the drawings Fig. 1 is a perspective view of a rotor, fan or impeller embodying our invention.

-l ig. 2 is a fragmentary View in end elevaion of the same on an enlarged scale.

8 is a fragmentary view on an enlarger. scale of a portion of one of the end rings as looked at from the inside thereof and showing some of the vanes in transverse vertical section.

Fig. i is a transverse vertical detail sectional view as taken on the line l -4i of Fig.

Fig.

5 is a detail vertical sectional view as taken on the line 5-5 of Fig. 3.

Fig. 6 is longitudinal sectional view through the rotor as taken on the line 6*6 Fig. 7 is a detail vertical sectional view as taken on the line 7--7 of 2.

Fi s. 8 and 9 are perspective views of par embodied in our improved rotor, fan or impeller and which will be more fully referred to later.

in general our improved rotor includes a shaft and two annular end plates or rings made up of segments fixed to the shaft by radial spokes or arms, said rings being connected together by vanes disposed parallel to the shaft.

Referring now in detail to that embodiment of the invention illustrated in the ac companying drawings, 1 indicates the shaft 1,704,123 sm ar orrl Eq nn si nonn M. nanvEnson, or BOQNE, onronnrron, or onrcl'ieo, rumors, A. conneuron non nnownns.

, 19536. Serial No. 111,091.

of the rotor and concent 'ic therewith are two longitudinally spacedannular endplates or rings 2-2 connected together by thevanes or blades i 3. Eachend plate or ring 2 is made up of a plurality of segments l and as shown herein there are four of such segments embodied in each ring. Each segment which is made'of sheet metal of a shallow channel shape cross section includes a radial p ate or ring body 4 and inner and outer annular flanges 4 and l? respectively. Rigidly fixed to one end of the body ofeachsegment,

on the outer surface thereof as by meansof therivets 5 is a connector plateo, which also includes inner and outer flanges 5 and 5 respectively to engage the respective flanges of the associated segment 4. Such a connector plate is best shown in perspective in Fig. 8. lVhen all'the segments making up a complete ringare in end to end engage-- merit, the. free end of. one connector plate 5 overhangs the other end of an abutting segment at and is detacliably.secured thereto by bolts and nuts 6, locking plates 7 .being employed in connection with said bolts to prevent the possibility of theirbecoming loose.

Associated with is a plurality of spokes orradial arms .8 for supporting the rings in operative relation with respect to the shaft 1. Each spoke or arm is made of a channel. with its flanges 8 disposed outwardly and portions of the ends of said flanges at the outer end of each spoke or arm are cut away so that shoulders 8 are thus provided. Said shoulders are engaged with the inner flange 4d of the asso ciated segment, and the web 8 of the spoke or arm beyond said shoulders is engaged with the inner face ofthe segmentand secured thereto by bolts and nuts 9 which are held against rotation by locking plates 10 as best shown in 7, said plates being similar to the plates ,7 before mentioned. The inner end of all of the spokes of each endring, which spokes are disposed radiah ly withrespeot to the shaftl are bolted to the outer face'of an associated collar 11 one of which in turn is fixed to'the shaft 1 a suitable distance from each end thereof.

As before stated, the two rings .2-2 are connected together by a plurality of vanes or blades 3-3 and as shown herein there are live of said vanes or blades associated with each end plate or ring each pairof-segments tot the respective rings. Each blade: which is disposed with its edges radial to the shaft 1 comprises an elongated sheet metal strip or plate, the margins. of which are turned over upon one surface of the vane to provide stiffening flanges 3 and intermediate said flanges thevane is provided on one side with an upset V shaped rib 3 defining a groove or'channel on the other side of vane as best shown in Fig. Each end of each vane is bent at a right angle to provide aural- 3 which is engaged with the inner surface of the body at" of a segment 4. Associated i with the ends of each vane or blade is a duplex reinforcing clip 12 best shown in perspective in Fig 9. Saidclip-comprises two spaced angle bar portions each including "horizontal and vertical flanges 1212 and connecting the two horizontal flanges thereof is an angular bridge portion l2". l i hensaid clips are in place, the horizontal flanges engage the underside-of the ends of 0 ch vane and are socured thereto as bythe rivets 13 while the vertical flanges 12" are engaged against the ears 3 and rivets 14 pass-through the ment body at, ears 33 and flanges 12 to secure said parts together, the angular bridge portion 12 engaging the end portion the f shaped rib 3 all as best shown iirFigs. 3 and 5. The clips reinforce the vanes at their ends and prevent"fracturingof the same at the junctions or corners of the wane and ears thereof.

Toassist the vanes in securing the rings together soas to reduce the strain on said vanes, we may employ long tie bolts 15, one of "which is disposed in the groovedetined by the rib 3 in one of the vanes of each set associated with'a pair of' segments l. Each bolt has a nut 15 by which the 521111611121); be tightened and to'prevent whipping of the mid portion of the bolt out of the groove we employ inverted U shaped clips 16 straddling the gmove in said vane as best shownin Fig. 6."

By removing, the bolts (3 and '9 itis apparent that the rotorniayibe disassembled for passage through narrow doorways, which are often 'met with in making installations in buildings already erected, and may thereafter, as easily again be reassembled. It is strong and rigid and so reinforced and strengthened as to amply withstai'ld operating pressures. V

While in describingour unproved rotor, we have referred to many'details of construction as wellp-as form and arrangement of the parts thereof, the same is by way of illustration only so that we do not wish to be limited thereto except as may be pointed out in the appended claims.

Ye claim as our invention:

1.- A rotor fora blower embodying ther in a shaft, end rings concentric with said shaft and each comprising a plurality of segments, blades interposed between and fixed at their ends to said end rings, each segment carrying a part on one end adapted to overhang the endof an abutting segment, means for detachably securing said overhanging part'to said end of the abutting segment, and spokes connecting the end rings to said shaft.

2. A=rotorfor blower embodying thereinwa shaft, end rings concentric with said shaft and each comprising a plurality of ments, blades interposed between and fixed at their ends to said end rings, means for detachably connecting the ends of the segments of each ring together, and spokes connected at one end to the shaft and 'detachably connected at the other end to an associated ring segment between two adjacent blades.

3. A rotor for a blower embodying therein, an end ring, a shaft, spokes fined at their inner ends to said shaft, said spokes each having a shoulder'near the outer ends to engage the inner periphery of the ring and means for securing the outer ends of said spokes to the ring.

4. A'rotor for a blower embodying therein, an end ring of channel cross section'and includin inner and outer annular flanges, a shaft, spokes fixed at one-end to said shaft and having parts out awayat theirouter ends to form shoulders to engage the inner flange of the ringand means for detachably connecting the outer ends of said spokes to said ring.

swa h rotor for a blower'embodying therein, an end ring of channel cross section and including inner and outer annular flanges, a shaft, spokes,each spoke-being of a channel cross section-and fixed at its inner end to said shaft and having portions of the sides thereof at the outer ends cut away to form 'sl'ionlders to engage the inner flange-of the ring and means for detaohablyconnecting the outer ends of said spokes to the ring.

In testimony wl'ioreof, I have hereunto set my hand this 27th day of April. 1926.

ARCHIE l EINliERti.

In testimony wl'iereof, I have hereunto set my hand this 18th day of May, 1926.- ISAD'ORE M. HALVERSON, 

